Troubles when cold. The main causes of the problem of tripping of a cold engine and ways to solve them

Signs of tripling

A motor is a complex technical device that requires constant monitoring by the driver. Without maintenance for a long time, or if the car is operated around the clock, but maintenance is rarely carried out, changes occur in the operation of the engine, which include: noises, knocks, squeaks; power reduction; increased fuel consumption; increased asynchronous vibration; and engine tripping. There are several signs that cause the engine to start to stall:

Rough engine operation (asynchronous vibration). That is, the motor vibrates randomly, sometimes frequent, sometimes infrequent twitching. This happens when the combustible mixture in one of the cylinders does not ignite.
One spark plug is not working. This happens when carbon deposits or soot appear on the candle, if the candles are flooded. The problem can be solved by stripping the spark plug, heating it over a fire, burning off the carbon deposits, and checking the gap.
The car “shoots”, that is, popping sounds are heard from the muffler. This means that there are gaps in the combustion of the combustible mixture in the working chamber of the cylinder, then the ignition is triggered and a bang occurs. This happens with carburetor engines when it was running on choke, which is why overshoot occurred.
The car accelerates slowly or even stalls if you give the gas sharply. Signs of slow acceleration may also indicate the presence of another problem in the engine.
Excessive fuel consumption. If one cylinder does not work or fires rarely, then the fuel supplied there simply comes out unburned from the muffler.
The needle on the tachometer is jumping. On modern cars, a certain corresponding icon may light up on the instrument panel.
The car jerks while driving.

Problems with injection

Certain specific problems can cause tripping when the engine is running in a car:

malfunction of the regulator responsible for idle speed;
blockage in the injection nozzle;
the fuel pump, air or fuel filter is clogged;
the sensor responsible for the throttle position has failed;
the ventilation system providing air to the engine crankcase is clogged;
ECU is faulty.

Separately, it is necessary to note the problems of the “tens” with sensors. Although their cost is insignificant, problems with them arise quite often. They often require replacement. First of all, this applies to the sensor responsible for mass fuel consumption. The second most common problem is the sensor that is responsible for the throttle position. The risk zone is not complete without an idle air regulator. All these elements require constant monitoring of their condition.

The motor may not operate correctly if the firmware of the electronic control part is poor. This can happen if tuning is used unwisely. At high speeds the car operates normally, but at idle it starts to shake. Sometimes the ECU may have defects that cannot be corrected. In this case, the only way out of this situation is to completely replace the electronic unit.

It would be a good idea to check the exhaust manifold for leaks. It doesn’t hurt to inquire about the condition of the vacuum brake booster. If it malfunctions, the spark plugs may get wet, which will also cause the engine to start to “trouble.”

We can only hope that the article will help car owners in solving this problem.

Causes of engine tripping

When the engine starts to rev, you can immediately hear changes in its operation. Out-of-sync motor twitching, staggering in discord. This happens that the frequency, the cycle of work is disrupted.

Here are the reasons there may be if the engine starts to stall:

The ignition timing is incorrectly set.
There is an air leak in the vacuum brake booster system.
The spark plug has failed. This is the most common reason, since spark plugs are usually changed until the old ones stop working. Although it is recommended to change it every 20 thousand kilometers of passage.
The high-voltage wire is broken. These are the wires that go onto the spark plugs.
The capacitor has failed.
The tightness of the intake manifold system is broken.
A valve or piston has burned out, so compression is not created.
The piston ring is burnt out. Due to this reason, a lot of smoke comes out of the muffler.
The valves in the gas distribution system are not configured correctly.
The rockers, that is, the camshaft journals, are worn out.
The cylinder head gasket is broken.
The valve stem seals are worn out, that is, they have hardened, pierced, or crumbled.
If the engine is carburetor, then it often happens that the carburetor is not configured correctly, which causes the supply of fuel and air to be disrupted.
Worn distributor shaft or turntable shaft bearing.
The air filter is clogged and does not allow the required amount of air to pass through.
The diaphragm of the vacuum ignition timing regulator has broken.
Fresh sparks are not suitable for this engine.

Some of the above reasons are typical only for carburetor engines, for example, cars of the VAZ family.

One of the important rules for keeping the engine in working condition is timely periodic checking of the oil level. Check the oil level with a dipstick with two or three marks marked on it.

Low compression or no compression at all

At the first stage, we tried to identify a non-working candle. If you succeed, you can enjoy the low cost of car repairs. If the problem turns out to be deeper, you will have to read more and try to fix the problem. Next you should check the compression in the cylinders. Often, when the engine loses compression, it starts to stall. The compression must be the same in each cylinder, and if this indicator drops too much, the unit has to be repaired. You can measure compression at the station, and the result can be very different:

depressurization of one of the cylinders and loss of compression;
too much wear on engine parts, pressure loss;
problems with the power unit lubrication system, lack of oil supply;
lack of normal ignition and fuel reaction due to violations;
splits and cracks in the engine, which clearly lead to replacement;
the need to perform a major overhaul of the power unit.

To avoid too rapid wear of engine parts and loss of compression, it is necessary to use good oil and follow all manufacturer’s recommendations regarding machine maintenance. This way you can operate the vehicle without any problems, unless there are other reasons for engine failure. If the engine is already malfunctioning and a major overhaul is required, there is no point in delaying the repair work. This can completely damage the power unit.

Cold diesel troits

The reasons for diesel engine tripping differ from gasoline engines. Such an engine fails either because the required compression of the fuel mixture is not created, or because the correct fuel supply or its quality is impaired.

Reasons for diesel tripping:

Airing.
The glow plugs are faulty.
The injector is jammed.
Incorrect valve clearances.
The timing belt (gas distribution mechanism) and fuel injection pump are not aligned correctly.

Read more about why diesel troits.

Let's sum it up

If you are faced with a problem with a stalling engine, contact us for diagnostics or carry out the simplest checks yourself. Whenever working on a vehicle's electrical systems, be careful. There are known cases of serious injuries from electric shocks when trying to remove a high-voltage wire from a spark plug. Such situations are unacceptable, because risking your health for the sake of handicraft diagnostics of a car is absolutely not necessary.

It is much better to go to a service station and order normal diagnostics of the car by specialists. In this case, you will get the required results much faster and will be able to immediately order a good repair of your vehicle. To summarize, it must be said that any problems in a modern power unit turn out to be quite difficult for self-diagnosis. Have you ever encountered a stalling engine?

Why does the engine injector troit?

The reasons listed above are also typical for injection engines, except for points: 13 and 14. To the reasons for the injector, you can also add the failure of the ignition module or the injector itself is faulty, the injectors are clogged, the injector wires are broken. An experienced motor mechanic is needed to diagnose and repair the injector and injectors.

Before contacting a car service, you should try to fix it yourself. This is possible in many cases, because there are many small reasons that are easy to eliminate on your own. You should start by checking the spark plugs and high-voltage wires. It is not difficult to check the functionality of the spark plugs; you need to start the engine, put on rubber gloves (if the wire is broken, to avoid electric shock), and one by one disconnect the wire from the spark plug. If the cylinder is working as expected, then when the wire is disconnected, the sound of the motor will change and the engine will begin to shake (change vibration). If the cylinder is not working, then disconnecting the wire will not make any changes in the operation of the motor. Therefore, it is necessary to change or clean the spark plug.

Soot on candles

In a working engine, the central and side electrodes of the spark plugs should be dry and have a light brown color; a slight black coating is allowed. Black dry electrodes indicate that there is more fuel in the fuel mixture than necessary. This is an indication that there is a malfunction in the power system. In this case, it is necessary to clean the throttle valve and idle air control.

White color means the mixture is lean (not enough fuel). Reasons for this:

low octane number;
disruption in the mixture formation cycle;
early ignition or air leaks.

It is necessary to clean the injector and change the gas station. To search for air leaks, it is necessary to inspect the throttle assembly, the intake manifold (body and attachment point to the cylinder head) and its pipes. The most accurate way to detect leaks is to use a smoke generator. If a defect is found at the connection, the seal must be replaced. If cracks are found on a part, it must be replaced.

A candle with oily carbon deposits indicates that oil has entered the combustion chamber (wear of the piston rings or valve stem seals). You need to check the compression using a compression gauge. The test is carried out through spark plug wells using a special adapter.

Measurements must be performed 2 times. The first is without adding oil, and the second is with adding. This will allow you to determine what exactly is worn out: oil scraper rings or valve seals. If the pressure readings are different, it means the rings are worn; if they are the same, it means the seals. To eliminate the malfunction, engine repair is necessary.

Red electrodes and insulator are the result of using low-quality fuel with a high content of additives. It is better to change the gas station so that the situation does not repeat itself. These spark plugs need to be replaced.

The presence of traces of gasoline is a sign that the spark plug is faulty and needs to be replaced.

After analyzing the carbon deposits of the spark plugs, it is necessary to check and adjust the gap between the electrodes. The size of the gap depends on the vehicle's power system and varies from 0.5 to 1.3 mm.

In most cases, cleaning off the carbon deposits and adjusting the gap will temporarily resolve the problem. If the problem persists, you need to contact specialists for a more in-depth diagnosis. The reasons may be: malfunction of sensors, engine power supply system, air leaks, etc. It will not be possible to determine them without experience and special equipment.

Why does a carburetor engine troit?

Dealing with the tripping of a carburetor engine is much easier. In general, such engines are simple due to the lack of computerized systems.

All of the above reasons in the paragraph “reasons for engine tripping” are typical for engines with a carburetor.

Here, accordingly, there can be no problems with the injector or ignition module. The most common reason for cars with such engines is that the spark plug does not work, then the wire from the distributor to the spark plug is broken, then the carburetor is incorrectly configured, then the valve burns out, then the piston burns out or the piston rings fail.

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Fuel shortage

Engine trouble may occur due to a malfunction of the injectors or fuel injection pump. If the fuel injection pump does not create the required pressure, the fuel is poorly atomized and does not burn intensively enough. The quality of spraying is also affected by the nozzle, which can be clogged or jammed and cause a similar effect.

In most cases, the high pressure pump can be repaired. If the problem is with the injectors, they need to be replaced. The quality of the diesel power system can only be determined using special equipment.

If you are unable to find the cause of the malfunction yourself, you need to contact a specialist. When operating a car with faults that cause tripping, the problem will progress and the cost of repairs will increase.

Clear smoke from the exhaust pipe

The steam coming out of the engine can be mistaken for white smoke. Steam is formed during the evaporation of accumulated liquid in cooled engine systems. Most often, the accumulation of liquid at the end of the exhaust pipe and the release of steam are observed in the cold season after starting the engine.

The engine and exhaust system components heat up and water evaporates rapidly. After the engine and exhaust system have completely warmed up, the amount of steam is reduced to a minimum or disappears completely.

The amount of steam released depends on the humidity levels in the environment; the higher they are, the longer its traces will be visible. The release of steam is not a sign of breakdown of engine parts and components; if this effect occurs, repairs are not required.